Don't know why I thumbed your post, but to answer your question:
Why would full body NOT work for hypertrophy? I thought this was a non-question by now, especially for you considering how long you've been lifting and for being a powerlifter.
Most experts agree on that the typical split with working only one or a couple of muscle groups in single session results in an unnecessary large volume and load for the individual muscles, ligaments and tendons for the raw lifter. You don't need to do 20 sets for chest on your chest/push day to stimulate growth. 5 might be just enough (and possible longer for the more advanced you are), and any work after that is just prolonging your recovery time.
What you're describing is pretty much what I've been saying ITT for the last year. It's similar to how how Sheiko or many European PL programs are structured. Norwegians are again a good example, but they do it 5-6 times per week. My current program should have me doing all 3 powerlifts on each of the 4 sessions per week.
If you search this thread you should find some other post I've made on this topic.
Your example looks like a good rough structure. Add in one overhead press per week, one overhead pull (lat pull-downs), some unilateral leg exercises, and ab and low back stuff and it will be good imo. Make sure to switch out the variations of the powerlifts every 4-8 weeks.
I can add that I saw my best growth this summer when I trained full body 5 days per week.
Yea, you came to mind when asking this question. I know it's successful in the raw powerlifting scene but I was wondering how does it do in the bodybuilding scene. I'm no longer a powerlifter, I just want to get big and lean and "aesthetic" (haha I say just, but that's what everyone wants).
I suppose the same principals apply though. I might give it a shot, right now 5/3/1 is a total wash for me. I have to modify it so heavily in order to get the appropriate volume.
I'm thinking I'll do 3 days a week and do all movements those days and rotate volume and intensity throughout a 4-8 week cycle. I want to make it upper body biased too, so I'll probably start most my days with upper body movement. Got any links on templates?